Flue baffle for heating apparatus



5, 1937. G. F. WALES 2,067,133

.FLUE BAFFLE FOR HEATING APPARATUS Filed March 28, 19-35 2 Sheets-Sheet l \k INVENTOR v BY ATTORNEY.

Jan. 5, 1937. G. F. WALES FLUE BAFFLE FOR HEATING APPARATUS Filed March 28, 1935 2 Sheets-Sheet 2 INVENTOR @0771 7 MW BY ATTORNE Patented Jan. 5, 1937 I UNITED STATES PATENT OFFICE FLUE BAFFLE FOR HEATING APPARATUS George F. Wales, Buffalo, N. Y., assignor to American Radiator Company, New York, N. Y., a corporation of New Jersey Application March 28, 1935 Serial No. 13,474

14 Claims. (01. 138-38) My invention relates to improvements in heat- Fig. 4 is an end view of the bafile as seen in ing apparatus, and more particularly to the edge view at Fig. 3; type employing tubular fiues for the passage Fig. 5 is a perspective view of a portion of a p of the hot gases and products of combustion baifle; s from the fuel receptacle to the stack, and said Fig. 6 is a detail face view of a blank from 5 invention has for its object to provide a simple, which a single plate or element is formed;

eflicient and inexpensive device for increasing Fig. "7 is a perspective view of the plate shown the efficiency of the heating apparatus. at Fig. 6 in condition to be united to other Further, said invention has for its object to similar plates or elements, and provide means which may be readily inserted Fig. 8 is a detail edge view showing one way 10 within the fire tubes of a heating apparatus of detachably securing several separate sections. whereby the gas travel will be lengthened, and or lengths together.

the movement of the gases delayed or retarded In said drawings Ill designates a hot water sufiiciently to insure the most effective transfer heating apparatus "of well known general form 16 of heat from the fuel to the fluid to be heated. comprising a tank ll enclosed within a suit- Further, said invention has for its object to able jacket l2. l3 denotes the cold water provide means which may be readily inserted inlet pipe extending from a source of cold water into the fire tubes of a heating apparatus, and, supply, and M the hot water outlet pipe adapted which will serve to baffle the passage of the hot for connection to the distributing system. With- 20 gases therethrough, and at the same time imin the jacket I 2, and below the tank H, is a 20 part a spiral motion to said gases. combustie'n chamber I 4 within which is 10- Further, said invention has for its object to cate'd a gas burner 15 having a supply pipe [6 provide a readily removable baffle to be inserted connected thereto provided with a thermostaticinto and removed from the fire tubes of a heatally controlled valve H. The tank II is pro- 2!! ing apparatus to permit of cleaning or repairing. vided with a central fire tube l8 which extends Further, said invention has for its object to from the combustion chamber I4, and termiprovide a bafile formed of a plurality of siminates above the top (if the jacket l2 where the larly-shaped elements stamped out of sheet same is provided with a deflecting hood l9. metal and secured together at their abuttin 2!] denotes a battle! disposed within the fire :0 ends and edges whereby to form a structure tube l8, and is shewn as suspended within said which, when inserted into a fire tube, will form fire tube by a transverse bar 24 secured to the two continuous interwoven spiral passages for upper end of said baffle and carried upon the the hot gases and products of combustion. upper end of said fire tube. Further, said invention has for its object to The baffle 21! is composed of a plurality of 38 provide a bafile of sheet metal elements which similarly-formed, semi-elliptical plates 2|, each may be conveniently secured together to form having a straight base or inner edge 2| and a a structure of any desired length. curved upper or outer edge 2!, and each plate Other objects will in part be obvious, and in av ng bS y q n p at ac part be pointed out hereinafter. ing' memb s 61 cars 22 at its ends, a d a simi- 40 To the attainment of the aforesaid objects larly-shaped ear 23 at the middle of its lower 40 and ends my invention consists in the novel edge. I features of construction, and in the combination, The plates 2| are arranged in two tiers or connection and arrangement of parts hereinseries with their straight edges meeting midway after more fully described and then pointed out between their ends, an Securd together by in the claims. Welding or otherwise fastening the registering 45 In the accompanying drawingsears 22, 23 together. The plates 21 are of such Figure 1 is a central vertical section of a water m nd Size that when e p a es o the one heater having a central flue therein provided series are disposed at an angle of about 70 to with one form of bafile constructed according to, the plates of the other series the elliptical edges and embodying our said invention; of each pair of cooperating plates will, when 50 Fig. 2' is a side elevation, on an enlarged scale, viewed endwise as illustrated at Fig. 4, jointly showing a portion of a battle formed of a plurality, describe a circle possessing a diameter slightly of segmental plates or elements; less than the diameter of the fire tube within Fig. 3 is an edge view thereof looking in the which the bafile is to be disposed. 155 direction of the arrow a, Fig. 2; The two tiers or series of plates, when secured together as hreinabove described and illustrated in the drawings, form a double zig-zag structure, one zig-zag being in effect interwoven with the other throughout the entire length of the structure.

In order to removably support the bafile 20 Within the fire tube IS, the same is provided at one end with a transverse bar 24 which is welded or otherwise secured to the cars 22 of the end plates 2!. The bar is somewhat greater in length than the internal diameter of the tube so that the projecting ends it thereof may rest upon the upper edge of said fire tube and so maintain the baffle suspended within the tube.

When the heating apparatus is of a vertical form and installed in a cellar or room having a low ceiling it would not be possible to withdraw the bafile as a single piece from thefiretuloe. To provide for such conditions the baflie is made in several lengths and the ears 22 of the abutting ends of the lengths perforated to receive cotter pins or rivets 25 which may be easily removed so as to permit of the ready separation of the several lengths, and the removal of the battle in sections.

It will, of course, be obvious that the length 01' travel provided by the interwoven members of the bafile may be increased or diminished by changing the relative angle of the plates of the upper and lower series thereof and that the bafiie may be supported or secured within a flue in any suitable or convenient manner.

Having thus described my said invention what I claim and desire to secure by Letters Patent is:

1. A baille structure for flues comprising a plurality of series of plates, the plates of each series being arranged in parallelism, and the plates of one series arranged at an angleto the plates of the other of said series, and the plates of one series secured at their edges to the corresponding edges of adjacent cooperating plates of the other of said series.

2. A baffie structure for flues comprising a plurality of series of plates, the plates of each series being arranged in parallelism and the plates of one series arranged at an angle to the plates of the other of said series, and attaching means at the adjacent edges of said plates for securing the same together longitudinally in pairs.

3. A bafile structure for flues comprising a plurality of series of connected plates, each of said plates having a straight base edge and a curved outer edge, and the plates of each series being arranged diagonally to the longitudinal axis of the structure with the plates of one seriesextending in a reverse direction to the plates of the other of said series; the plates of each series being secured at their base edges to the corresponding edges of adjacent plates 4. A baflie structure for flues comprising a plurality of series of plates, each of said plates having a straight base edge and a curved outer edge, and the plates of each series being arranged diagonally to the longitudinal axis of the structure with the plates of one series extending in a reverse direction to the plates of the other of said series, and attaching members along the adjacent edges of the plates of each series to securing said plates together in pairs.

5. A bafile structure for flues comprising a plurality of series of substantially semi-elliptical plates arranged cross-Wise in pairs with each plate diagonally disposed to the longitudinal axis of the structure, and attaching members along the corresponding edges of the adjacent plates of each series for securing said pairs of plates together and to the other of said plates.

6. A baffle structure for flues comprising a plurality of series of substantially semi-elliptical plates arranged cross-Wise in pairs with each plate diagonally disposed to the longitudinal axis of the structure, and attaching members integral with said plates extending in opposite directions from the straight edges of said plates, the attaching members of one pair of plates registering with the attaching members of adjacent plates for securing said plates together in pairs and in end to end relation.

'7. A baflie structure for flues comprising a plurality of series of substantially semi-elliptical plates, the corresponding plates of each series being arranged in pairs and the plates of each series arranged in parallelism and diagonally to the longitudinal axis of the structure, and attaching members formed integrally with said plates, the plates of one series arranged in crosswise relation to the cooperating plates of the other of said series.

8. A baflle structure for flues comprising a plurality of series of substantially semi-elliptical plates the corresponding plates of each series being arranged in pairs with each plate diagonally disposed to the longitudinal axis of the structure, and attaching members formed integrally with said plates, and extending laterally from the corners of said plates and from an intermediate point in the length of said plates and registering with the attaching members of the adjacent plates for securing said plates together.

9. A baffle structure for flues comprising a plurality of series of substantially semi-elliptical plates, the corresponding plates of each series being arranged in pairs with each plate diagonally disposed to the longitudinal axis of the structure, and attaching members formed in tegrally with said plates extending laterally from the corners of said plates and from an intermediate point in the length of said plates and registering with the attaching members of adjacent plates for securing said plates together, the plates of one series arranged in cross-wise relation to the cooperating plates of the other of said series, and means for supporting said baflle structure within a flue.

10. A baflle structure for flues comprising a plurality of series of semi-elliptical plates arranged cross-wise in pairs and the plates of each series arranged diagonally to the longitudinal axis of the structure, the plates of one series being secured at their edges to the corresponding edges of adjacent plates of the other of said series, and a transverse bar secured inwardly of its ends to the free edges of plates at one end of the structure for supporting the same in suspended position.

' 11. A bafile structure for flues comprising a plurality of separate lengths each including a plurality of series of plates with the plates of each series arranged in parallelism and the corresponding plates of the series arranged crosswise in pairs, and the plates of each pair secured at their ends to the registering ends of adjacent pairs of plates, and means for detachably securing said separate lengths together in'end to end relation.

12. A baflie structure for flues comprising a plurality of series of plates with the plates of each series arranged in parallelism and disposed cross-wise of the corresponding plates of the other series, and means for securing the plates of one series at the ends thereof to the registering ends of the plates of the other of said series.

13. A bafiie structure for flues comprising a plurality of series of plates with the plates of each series arranged in parallelism and disposed cross-wise of the corresponding plates of the other series, and means for securing the plates of one series at their edges to the edges of the plates of the other of said series.

14. A baflie structure for flues comprising a plurality of series of plates with the plates of each series arranged in parallelism and disposed cross-wise of the corresponding plates of the other of said series, and the plates of each series being secured at their edges to the edges of the adjacent cooperating plates of the other series, and means for supporting said baflie structure within a flue.

GEORGE F. WALES. 

